聊城大学校园灰喜鹊营巢特征调查

根据2005～2007年每年1次的聊城大学校园灰喜鹊巢址分布情况的调查结果,作者发现,近3 a来灰喜鹊巢的数量以每年15%的数量在增加;灰喜鹊选择杨树(毛白杨和银白杨)作为筑巢树种的比例高达82%,且筑巢的高度存在一定程度的下降.其中,以营巢树为中心,半径为10 m的样方内树的数量2～4株占71.8%.此外,生活区的巢的数量所占比例呈逐年增加趋势.这一研究结果对如何进行校园绿地的规划以及鸟类保护具有一定的指导作用.

Nesting Characteristics of Cynaopica cyana in Campus of Liaocheng University

Nest locations of Cynaopica cyana in the campus of Liaocheng University were surveyed during 2005 - 2007 Results showed that number of nest in these three years was increased by 15% per year; Populus tomentosa and Populus alba were selected for nesting, amounting to 82% of nests on these trees; the height of nests from the ground was decreased to some extent in these years.On areas of a radius of 10 m taking the nesting tree as the center, on 71.8% of them grew 2 - 4 trees; number of nests in the living region of the university was increased yearly.